{"instruction": "You are an expert in named entity recognition. Please extract entities that match the schema definition from the input. Return an empty list if the entity type does not exist. Please respond in the format of a JSON string.", "schema": ["Chemical"], "input": "Despite the short half - life of ( 13 ) N ( 9 . 97 min ) , the accumulation of NPs in different organs could be measured during the first 68 min after administration ."}
{"Chemical": ["( 13 ) N"]}